It is ok to have so-called ‘negative’ emotions. They are a sign to us that something needs to be done. The aim is to get the message and then have the nervous energy of emotions (with their cortisol and adrenaline) dissipate or be processed as I am suggesting here.
All of the techniques to follow are essentially turning off the stress response, and activating the relaxation response. In that state you are more aware, creative, powerful, resilient and less reactive. So that is always what we are aiming for.
The Tips are sort of listed from the most basic (for the small stuff) to the techniques for the bigger stuff. Choose one, if it is not potent enough then work your way down the list. Enjoy!